JP6933988B2 - Webbing winder - Google Patents

Webbing winder Download PDF

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Publication number
JP6933988B2
JP6933988B2 JP2018025790A JP2018025790A JP6933988B2 JP 6933988 B2 JP6933988 B2 JP 6933988B2 JP 2018025790 A JP2018025790 A JP 2018025790A JP 2018025790 A JP2018025790 A JP 2018025790A JP 6933988 B2 JP6933988 B2 JP 6933988B2
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Prior art keywords
press
fitting
hole
fitting hole
rotating body
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JP2019142264A (en
Inventor
真一 大久保
真一 大久保
隆 中嶋
隆 中嶋
征典 永峰
征典 永峰
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Tokai Rika Co Ltd
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Tokai Rika Co Ltd
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Priority to JP2018025790A priority Critical patent/JP6933988B2/en
Priority to CN201980012404.3A priority patent/CN111712407B/en
Priority to US16/968,262 priority patent/US11518340B2/en
Priority to PCT/JP2019/003007 priority patent/WO2019159686A1/en
Publication of JP2019142264A publication Critical patent/JP2019142264A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R22/00—Safety belts or body harnesses in vehicles
    • B60R22/34—Belt retractors, e.g. reels
    • B60R22/36—Belt retractors, e.g. reels self-locking in an emergency
    • B60R22/405—Belt retractors, e.g. reels self-locking in an emergency responsive to belt movement and vehicle movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R22/00—Safety belts or body harnesses in vehicles
    • B60R22/34—Belt retractors, e.g. reels
    • B60R22/341—Belt retractors, e.g. reels comprising energy-absorbing means
    • B60R22/3413—Belt retractors, e.g. reels comprising energy-absorbing means operating between belt reel and retractor frame
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R22/00—Safety belts or body harnesses in vehicles
    • B60R22/28—Safety belts or body harnesses in vehicles incorporating energy-absorbing devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R22/00—Safety belts or body harnesses in vehicles
    • B60R22/28—Safety belts or body harnesses in vehicles incorporating energy-absorbing devices
    • B60R2022/286—Safety belts or body harnesses in vehicles incorporating energy-absorbing devices using deformation of material
    • B60R2022/287—Safety belts or body harnesses in vehicles incorporating energy-absorbing devices using deformation of material of torsion rods or tubes

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automotive Seat Belt Assembly (AREA)

Description

本発明は、回転体と連絡体とが一体回転可能に連絡されると共に連絡体と規制体とが一体回転可能に連絡されるウェビング巻取装置に関する。 The present invention relates to a webbing winding device in which a rotating body and a connecting body are integrally rotatably communicated and a connecting body and a restricting body are integrally rotatably communicated.

下記特許文献１に記載のシートベルトリトラクタでは、リール及びロッキングベースの軸方向孔の周面にがた抑え用リブが設けられており、各軸方向孔にそれぞれトーションシャフトの第１トルク伝達軸及び第２トルク伝達軸が圧入されて、リールとロッキングベースとトーションシャフトとが一体回転可能にされている。 In the seatbelt retractor described in Patent Document 1 below, ribs for suppressing rattling are provided on the peripheral surfaces of the axial holes of the reel and the locking base, and the first torque transmission shaft of the torsion shaft and the first torque transmission shaft of the torsion shaft are provided in each axial hole, respectively. The second torque transmission shaft is press-fitted so that the reel, the locking base, and the torsion shaft can rotate integrally.

ここで、このようなシートベルトリトラクタでは、軸方向孔に第１トルク伝達軸又は第２トルク伝達軸を効果的に保持できるのが好ましい。 Here, in such a seatbelt retractor, it is preferable that the first torque transmission shaft or the second torque transmission shaft can be effectively held in the axial hole.

特開２００２−１０４１３４号公報JP-A-2002-104134

本発明は、上記事実を考慮し、圧入孔に圧入部を効果的に保持できるウェビング巻取装置を得ることが目的である。 In consideration of the above facts, an object of the present invention is to obtain a webbing winding device capable of effectively holding a press-fitting portion in the press-fitting hole.

本発明の第１態様のウェビング巻取装置は、乗員に装着されるウェビングが引出されて引出方向に回転される回転体と、前記回転体と一体回転可能に連絡される連絡体と、前記連絡体と一体回転可能に連絡され、所定の機会に引出方向への回転が規制される規制体と、前記回転体又は前記規制体と前記連絡体との一方に設けられ、前記回転体又は前記規制体と前記連絡体との他方に設けられる圧入孔に圧入されて前記回転体又は前記規制体と前記連絡体とが連絡されると共に、前記圧入孔への圧入方向へ向かうに従い前記圧入孔との干渉力が大きくされる圧入部と、を備える。 The webbing winding device according to the first aspect of the present invention includes a rotating body in which a webbing mounted on an occupant is pulled out and rotated in the drawing direction, a connecting body rotatably communicated with the rotating body, and the communication. A restrictive body that is rotatably communicated with the body and is restricted from rotating in the withdrawal direction at a predetermined opportunity, and the rotating body or the restricting body and the connecting body are provided on one of the rotating body or the restricting body. It is press-fitted into a press-fitting hole provided on the other side of the body and the connecting body to communicate the rotating body or the restricting body with the connecting body, and the press-fitting hole becomes It is provided with a press-fitting portion that increases the interference force.

本発明の第２態様のウェビング巻取装置は、乗員に装着されるウェビングが引出されて引出方向に回転される回転体と、前記回転体と一体回転可能に連絡される連絡体と、前記連絡体と一体回転可能に連絡され、所定の機会に引出方向への回転が規制される規制体と、前記回転体又は前記規制体と前記連絡体との一方に設けられ、前記回転体又は前記規制体と前記連絡体との他方に設けられる圧入孔に圧入されて前記回転体又は前記規制体と前記連絡体とが連絡される圧入部と、前記圧入孔及び前記圧入部の少なくとも一方の周面に設けられると共に、前記規制体の引出方向への回転が規制される際における前記回転体の回転力の作用側に配置され、前記圧入孔への前記圧入部の圧入による削れ部と、を備える。 The webbing winding device according to the second aspect of the present invention includes a rotating body in which a webbing mounted on an occupant is pulled out and rotated in the drawing direction, a connecting body rotatably communicated with the rotating body, and the communication. A restrictive body that is rotatably communicated with the body and is restricted from rotating in the withdrawal direction at a predetermined opportunity, and the rotating body or the restricting body and the connecting body are provided on one of the rotating body or the restricting body. A press-fitting portion that is press-fitted into a press-fitting hole provided on the other side of the body and the connecting body to communicate the rotating body or the restricting body with the connecting body, and at least one peripheral surface of the press-fitting hole and the press-fitting portion. It is provided on the side where the rotational force of the rotating body acts when the rotation of the restricting body in the withdrawal direction is restricted, and is provided with a scraped portion by press-fitting the press-fitting portion into the press-fitting hole. ..

本発明の第３態様のウェビング巻取装置は、乗員に装着されるウェビングが引出されて引出方向に回転される回転体と、前記回転体と一体回転可能に連絡される連絡体と、前記連絡体と一体回転可能に連絡され、所定の機会に引出方向への回転が規制される規制体と、前記回転体又は前記規制体と前記連絡体との一方に設けられ、前記回転体又は前記規制体と前記連絡体との他方に設けられる圧入孔の回転軸方向全体に圧入され又は回転軸方向全体において前記圧入孔に圧入されて前記回転体又は前記規制体と前記連絡体とが連絡される圧入部と、を備える。 The webbing winding device according to the third aspect of the present invention includes a rotating body in which a webbing mounted on an occupant is pulled out and rotated in the drawing direction, a connecting body rotatably communicated with the rotating body, and the communication. A restrictive body that is rotatably communicated with the body and is restricted from rotating in the withdrawal direction at a predetermined opportunity, and the rotating body or the restricting body and the connecting body are provided on one of the rotating body or the restricting body. It is press-fitted into the entire rotation axis direction of the press-fitting hole provided on the other side of the body and the connecting body, or is press-fitted into the press-fitting hole in the entire rotation axis direction to communicate the rotating body or the restricting body with the connecting body. It is provided with a press-fitting portion.

本発明の第４態様のウェビング巻取装置は、本発明の第１態様〜第３態様の何れか１つのウェビング巻取装置において、前記圧入孔への前記圧入部の圧入を補助する補助部を備える。 The webbing winding device according to the fourth aspect of the present invention includes an auxiliary portion that assists the press-fitting of the press-fitting portion into the press-fitting hole in any one of the first to third aspects of the present invention. Be prepared.

本発明の第１態様のウェビング巻取装置では、乗員に装着されるウェビングが引出されて、回転体が引出方向に回転される。さらに、回転体と連絡体とが一体回転可能に連絡されると共に、連絡体と規制体とが一体回転可能に連絡されており、所定の機会に規制体の引出方向への回転が規制される。また、回転体又は規制体と連絡体との一方の圧入部が回転体又は規制体と連絡体との他方の圧入孔に圧入されて、回転体又は規制体と連絡体とが連絡される。 In the webbing winding device of the first aspect of the present invention, the webbing mounted on the occupant is pulled out, and the rotating body is rotated in the pulling direction. Further, the rotating body and the connecting body are communicated so as to be integrally rotatable, and the connecting body and the regulating body are communicated so as to be integrally rotatable, so that the rotation of the regulating body in the withdrawal direction is regulated at a predetermined opportunity. .. Further, one press-fitting portion of the rotating body or the restricting body and the connecting body is press-fitted into the other press-fitting hole of the rotating body or the restricting body and the connecting body, so that the rotating body or the restricting body and the connecting body are communicated with each other.

ここで、圧入孔への圧入部の圧入方向へ向かうに従い圧入部と圧入孔との干渉力が大きくされる。このため、圧入孔に圧入部を効果的に保持できる。 Here, the interference force between the press-fitting portion and the press-fitting hole is increased toward the press-fitting direction of the press-fitting portion into the press-fitting hole. Therefore, the press-fitting portion can be effectively held in the press-fitting hole.

本発明の第２態様のウェビング巻取装置では、乗員に装着されるウェビングが引出されて、回転体が引出方向に回転される。また、回転体と連絡体とが一体回転可能に連絡されると共に、連絡体と規制体とが一体回転可能に連絡されており、所定の機会に規制体の引出方向への回転が規制される。さらに、回転体又は規制体と連絡体との一方の圧入部が回転体又は規制体と連絡体との他方の圧入孔に圧入されて、回転体又は規制体と連絡体とが連絡される。 In the webbing winding device of the second aspect of the present invention, the webbing mounted on the occupant is pulled out, and the rotating body is rotated in the pulling direction. In addition, the rotating body and the connecting body are communicated so as to be integrally rotatable, and the connecting body and the regulating body are communicated so as to be integrally rotatable, so that the rotation of the regulating body in the withdrawal direction is regulated at a predetermined opportunity. .. Further, one press-fitting portion of the rotating body or the restricting body and the connecting body is press-fitted into the other press-fitting hole of the rotating body or the restricting body and the connecting body, and the rotating body or the restricting body and the connecting body are communicated with each other.

ここで、圧入孔及び圧入部の少なくとも一方の周面に圧入孔への圧入部の圧入による削れ部が設けられており、規制体の引出方向への回転が規制される際における回転体の回転力の作用側に削れ部が配置される。このため、削れ部により圧入孔に圧入部を効果的に保持できる。 Here, at least one peripheral surface of the press-fitting hole and the press-fitting portion is provided with a scraped portion by press-fitting the press-fitting portion into the press-fitting hole, and the rotation of the rotating body when the rotation of the regulating body in the withdrawal direction is restricted. The scraped part is arranged on the side where the force is applied. Therefore, the press-fitting portion can be effectively held in the press-fitting hole by the scraped portion.

本発明の第３態様のウェビング巻取装置では、乗員に装着されるウェビングが引出されて、回転体が引出方向に回転される。また、回転体と連絡体とが一体回転可能に連絡されると共に、連絡体と規制体とが一体回転可能に連絡されており、所定の機会に規制体の引出方向への回転が規制される。さらに、回転体又は規制体と連絡体との一方の圧入部が回転体又は規制体と連絡体との他方の圧入孔に圧入されて、回転体又は規制体と連絡体とが連絡される。 In the webbing winding device of the third aspect of the present invention, the webbing mounted on the occupant is pulled out, and the rotating body is rotated in the pulling direction. In addition, the rotating body and the connecting body are communicated so as to be integrally rotatable, and the connecting body and the regulating body are communicated so as to be integrally rotatable, so that the rotation of the regulating body in the withdrawal direction is regulated at a predetermined opportunity. .. Further, one press-fitting portion of the rotating body or the restricting body and the connecting body is press-fitted into the other press-fitting hole of the rotating body or the restricting body and the connecting body, and the rotating body or the restricting body and the connecting body are communicated with each other.

ここで、圧入孔の回転軸方向全体に圧入部が圧入され、又は、圧入孔に圧入部が回転軸方向全体において圧入される。このため、圧入孔に圧入部を効果的に保持できる。 Here, the press-fitting portion is press-fitted in the entire rotation axis direction of the press-fitting hole, or the press-fitting portion is press-fitted into the press-fitting hole in the entire rotation axis direction. Therefore, the press-fitting portion can be effectively held in the press-fitting hole.

本発明の第４態様のウェビング巻取装置では、補助部が圧入孔への圧入部の圧入を補助する。このため、圧入孔への圧入部の圧入を容易化できる。 In the webbing winding device of the fourth aspect of the present invention, the auxiliary portion assists the press-fitting of the press-fitting portion into the press-fitting hole. Therefore, it is possible to facilitate press-fitting of the press-fitting portion into the press-fitting hole.

本発明の実施形態に係るウェビング巻取装置を示す後方から見た断面図である。It is sectional drawing seen from the rear which shows the webbing winding apparatus which concerns on embodiment of this invention. 本発明の実施形態に係るウェビング巻取装置の主要部を示す後方から見た背面図である。It is a rear view which showed the main part of the webbing winding apparatus which concerns on embodiment of this invention, and was seen from the rear. （Ａ）〜（Ｃ）は、本発明の実施形態に係るウェビング巻取装置のトーションシャフトを示す図であり、（Ａ）は、後方から見た背面図であり、（Ｂ）は、右方から見た断面図（（Ａ）の３Ｂ−３Ｂ線断面図）であり、（Ｃ）は、左方から見た断面図（（Ａ）の３Ｃ−３Ｃ線断面図）である。(A) to (C) are views showing a torsion shaft of a webbing winding device according to an embodiment of the present invention, (A) is a rear view seen from the rear, and (B) is a right side view. It is a cross-sectional view (3B-3B line cross-sectional view of (A)) seen from the left, and (C) is a cross-sectional view (3C-3C line cross-sectional view of (A)) seen from the left. （Ａ）〜（Ｃ）は、本発明の実施形態に係るウェビング巻取装置におけるトーションシャフトとピニオンとの連絡状態を示す図であり、（Ａ）は、右方から見た断面図（図２の４−４線断面図）であり、（Ｂ）は、（Ａ）の領域３Ｂの拡大図であり、（Ｃ）は、（Ｂ）の４Ｃ−４Ｃ線断面図である。(A) to (C) are views showing the contact state between the torsion shaft and the pinion in the webbing winding device according to the embodiment of the present invention, and (A) is a cross-sectional view seen from the right (FIG. 2). 4-4 line cross-sectional view), (B) is an enlarged view of the region 3B of (A), and (C) is a 4C-4C line cross-sectional view of (B). （Ａ）〜（Ｄ）は、本発明の実施形態に係るウェビング巻取装置におけるトーションシャフトとピニオンとの連絡手順を示す図４（Ｃ）に対応する断面図であり、（Ａ）は、トーションシャフトとピニオンとの連絡前を示し、（Ｂ）は、トーションシャフトとピニオンとの連絡前期を示し、（Ｃ）は、トーションシャフトとピニオンとの連絡後期を示し、（Ｄ）は、トーションシャフトとピニオンとの連絡終了状態を示している。(A) to (D) are cross-sectional views corresponding to FIG. 4 (C) showing a procedure for connecting the torsion shaft and the pinion in the webbing winding device according to the embodiment of the present invention, and (A) is a torsion. Before the contact between the shaft and the pinion is shown, (B) shows the first half of the contact between the torsion shaft and the pinion, (C) shows the second half of the contact between the torsion shaft and the pinion, and (D) shows the contact between the torsion shaft and the pinion. Indicates the end of contact with the pinion. （Ａ）及び（Ｂ）は、本発明の実施形態に係るウェビング巻取装置におけるスプールとトーションシャフトとの連絡状態を示す図であり、（Ａ）は、左方から見た断面図（図２の６−６線断面図）であり、（Ｂ）は、（Ａ）の主要部の拡大図である。(A) and (B) are views showing the contact state between the spool and the torsion shaft in the webbing winding device according to the embodiment of the present invention, and (A) is a cross-sectional view seen from the left (FIG. 2). 6-6 cross-sectional view of the above, (B) is an enlarged view of the main part of (A).

図１には、本発明の実施形態に係るウェビング巻取装置１０が後方から見た断面図にて示されている。なお、図面では、ウェビング巻取装置１０の右方を矢印ＲＨで示し、ウェビング巻取装置１０の上方を矢印ＵＰで示している。 FIG. 1 shows a cross-sectional view of the webbing winding device 10 according to the embodiment of the present invention as viewed from the rear. In the drawings, the right side of the webbing winding device 10 is indicated by an arrow RH, and the upper part of the webbing winding device 10 is indicated by an arrow UP.

本実施形態に係るウェビング巻取装置１０は、車両に設置されており、ウェビング巻取装置１０の前方、左方及び上方は、それぞれ例えば車幅方向外方、車両前方及び上方に向けられている。 The webbing winding device 10 according to the present embodiment is installed in a vehicle, and the front, left, and upper sides of the webbing winding device 10 are directed to, for example, outward in the vehicle width direction, front of the vehicle, and upward, respectively. ..

図１に示す如く、ウェビング巻取装置１０は、支持体としての金属製で断面Ｕ字形板状のフレーム１２を備えており、フレーム１２には、後側の背板（図示省略）と、左側の脚板１２Ａと、右側の脚板１２Ｂと、が設けられている。フレーム１２は、背板において、車体に固定されており、これにより、ウェビング巻取装置１０が車両に設置されている。 As shown in FIG. 1, the webbing winding device 10 includes a metal frame 12 as a support and having a U-shaped cross section, and the frame 12 includes a back plate (not shown) on the rear side and a left side. The leg plate 12A and the right leg plate 12B are provided. The frame 12 is fixed to the vehicle body on the back plate, whereby the webbing winding device 10 is installed in the vehicle.

フレーム１２の脚板１２Ａと脚板１２Ｂとの間には、回転体としての金属製で略有底円筒状のスプール１４（図２参照）が支持されており、スプール１４は、ダイカストにより製造されている。スプール１４の左端部は、脚板１２Ａを貫通すると共に、スプール１４の右端部は、脚板１２Ｂを貫通しており、スプール１４は、巻取方向（図６（Ａ）等の矢印Ａの方向）及び引出方向（図６（Ａ）等の矢印Ｂの方向）に回転可能にされている。スプール１４内には、略円状の内孔１４Ａが同軸上に形成されており、内孔１４Ａの左端部は、同軸上に拡径されると共に、スプール１４の右面は、閉塞されている。 A metal spool 14 (see FIG. 2) made of metal as a rotating body is supported between the leg plate 12A and the leg plate 12B of the frame 12, and the spool 14 is manufactured by die casting. .. The left end of the spool 14 penetrates the leg plate 12A, and the right end of the spool 14 penetrates the leg plate 12B, and the spool 14 has a winding direction (direction of arrow A in FIG. 6A and the like) and It is rotatable in the pull-out direction (direction of arrow B in FIG. 6 (A) and the like). A substantially circular inner hole 14A is formed coaxially in the spool 14, the left end portion of the inner hole 14A is coaxially expanded in diameter, and the right surface of the spool 14 is closed.

スプール１４の右壁には、スプール１４の内側において、第１被連絡部としての略円状の第１連絡孔１６（図６（Ａ）参照）が同軸上に形成されており、第１連絡孔１６は、スプール１４の軸方向（左右方向）においてスプール１４の内孔１４Ａを介してスプール１４の左方に開放されている。第１連絡孔１６の周囲には、略台形状の挿入孔１６Ａが複数（本実施形態では６個）形成されており、複数の挿入孔１６Ａは、第１連絡孔１６の周方向に等間隔に配置されると共に、それぞれ第１連絡孔１６の周方向における寸法が第１連絡孔１６の径方向外側へ向かうに従い小さくされている。挿入孔１６Ａの第１連絡孔１６径方向外側かつ引出方向側の角面１６Ｂは、挿入孔１６Ａの第１連絡孔１６径方向外側かつ巻取方向側の角面に比し、内角が大きくされて、なだらかに凹状に湾曲されており、挿入孔１６Ａの巻取方向側の側面は、略平面状にされて、第１連絡孔１６の径方向に対する傾斜角度が挿入孔１６Ａの引出方向側の側面に比し小さくされている。 On the right wall of the spool 14, a substantially circular first connecting hole 16 (see FIG. 6A) as a first contacted portion is coaxially formed inside the spool 14, and the first contact is made. The holes 16 are opened to the left of the spool 14 via the inner holes 14A of the spool 14 in the axial direction (left-right direction) of the spool 14. A plurality of substantially trapezoidal insertion holes 16A (six in this embodiment) are formed around the first communication hole 16, and the plurality of insertion holes 16A are equally spaced in the circumferential direction of the first communication hole 16. The dimensions of the first connecting hole 16 in the circumferential direction are reduced toward the outer side in the radial direction of the first connecting hole 16. The corner surface 16B of the insertion hole 16A outside the first communication hole 16 in the radial direction and on the pull-out direction side has a larger internal angle than the corner surface of the insertion hole 16A outside the first communication hole 16 in the radial direction and on the winding direction side. The side surface of the insertion hole 16A on the winding direction side is formed to be substantially flat, and the inclination angle of the first communication hole 16 with respect to the radial direction is on the extraction direction side of the insertion hole 16A. It is smaller than the sides.

スプール１４の周壁には、長尺矩形状の貫通孔１８（図２及び図６（Ａ）参照）が形成されており、貫通孔１８は、スプール１４の軸方向に延伸されている。貫通孔１８は、スプール１４の周壁を弦方向に貫通しており、貫通孔１８は、スプール１４の内孔１４Ａ部分を通過すると共に、右方において第１連絡孔１６の２個の挿入孔１６Ａに対向している。貫通孔１８の基端部（貫通方向一端部）には、係止孔１８Ａが形成されており、係止孔１８Ａは、貫通孔１８の係止孔１８Ａより先端側（貫通方向他端側）の部分に対し、幅方向両側に拡大されている。係止孔１８Ａの先端側の両側面（幅方向において互いに対向する面）は、凹状に湾曲されており、係止孔１８Ａの先端側部分は、先端側へ向かうに従い幅方向において徐々に縮小されている。 A long rectangular through hole 18 (see FIGS. 2 and 6A) is formed in the peripheral wall of the spool 14, and the through hole 18 is extended in the axial direction of the spool 14. The through hole 18 penetrates the peripheral wall of the spool 14 in the chord direction, and the through hole 18 passes through the inner hole 14A portion of the spool 14 and the two insertion holes 16A of the first communication hole 16 on the right side. Facing. A locking hole 18A is formed at the base end portion (one end portion in the penetrating direction) of the through hole 18, and the locking hole 18A is on the tip end side (the other end side in the penetrating direction) of the locking hole 18A of the through hole 18. It is enlarged on both sides in the width direction with respect to the part of. Both side surfaces of the locking hole 18A on the distal end side (surfaces facing each other in the width direction) are curved in a concave shape, and the distal end side portion of the locking hole 18A is gradually reduced in the width direction toward the distal end side. ing.

スプール１４の周壁には、貫通孔１８の係止孔１８Ａ側部分とスプール１４の内孔１４Ａとの間において、受部２０（図６（Ａ）参照）が形成されており、受部２０は、巻取方向に突出されている。受部２０の基端側部分の係止孔１８Ａ側の面は、係止孔１８Ａの先端側の側面によって形成されており、受部２０の先端側部分の係止孔１８Ａ側の面は、貫通孔１８の係止孔１８Ａより先端側の側面によって形成されている。受部２０の内孔１４Ａ側の面は、内孔１４Ａの周面によって形成されており、受部２０の基端側部分の内孔１４Ａ側の面は、第１連絡孔１６における挿入孔１６Ａの引出方向側部分の周面と面一にされると共に、受部２０の先端側部分の内孔１４Ａ側の面は、第１連絡孔１６の挿入孔１６Ａ間の周面と面一にされている。 On the peripheral wall of the spool 14, a receiving portion 20 (see FIG. 6A) is formed between the locking hole 18A side portion of the through hole 18 and the inner hole 14A of the spool 14, and the receiving portion 20 is formed. , Protruding in the winding direction. The surface of the receiving portion 20 on the base end side portion on the locking hole 18A side is formed by the side surface on the distal end side of the locking hole 18A, and the surface of the receiving portion 20 on the distal end side portion on the locking hole 18A side is formed. It is formed by the side surface of the through hole 18 on the tip side of the locking hole 18A. The surface of the receiving portion 20 on the inner hole 14A side is formed by the peripheral surface of the inner hole 14A, and the surface of the receiving portion 20 on the inner hole 14A side is the insertion hole 16A in the first connecting hole 16. The surface of the tip side portion of the receiving portion 20 on the inner hole 14A side is flush with the peripheral surface of the insertion hole 16A of the first communication hole 16. ing.

スプール１４には、長尺帯状のウェビング２２（図６（Ｂ）参照）が基端側から巻取られており、ウェビング２２の基端側は、スプール１４の貫通孔１８の先端側から貫通孔１８に挿入されている。ウェビング２２の基端部には、筒状の係止筒２２Ａが形成されており、係止筒２２Ａ内には、金属製で円柱状のシャフト２４が挿入されている。係止筒２２Ａ及びシャフト２４は、スプール１４における係止孔１８Ａの先端側の両側面に係止されており、これにより、ウェビング２２の基端部がスプール１４に係止されている。スプール１４が巻取方向に回転される際には、スプール１４にウェビング２２が巻取られると共に、スプール１４からウェビング２２が引出される際には、スプール１４が引出方向に回転される。また、スプール１４からウェビング２２が引出されることで、車両の座席に着座した乗員にウェビング２２が装着される。 A long strip-shaped webbing 22 (see FIG. 6B) is wound around the spool 14 from the proximal end side, and the proximal end side of the webbing 22 is a through hole from the tip end side of the through hole 18 of the spool 14. It is inserted in 18. A tubular locking cylinder 22A is formed at the base end of the webbing 22, and a metal columnar shaft 24 is inserted into the locking cylinder 22A. The locking cylinder 22A and the shaft 24 are locked to both side surfaces of the spool 14 on the distal end side of the locking hole 18A, whereby the base end portion of the webbing 22 is locked to the spool 14. When the spool 14 is rotated in the winding direction, the webbing 22 is wound on the spool 14, and when the webbing 22 is pulled out from the spool 14, the spool 14 is rotated in the drawing direction. Further, by pulling out the webbing 22 from the spool 14, the webbing 22 is attached to the occupant seated in the seat of the vehicle.

フレーム１２の右側には、付勢機構２６が設けられており、付勢機構２６内には、付勢部材としてのぜんまいばね（図示省略）が設けられている。ぜんまいばねは、スプール１４の右端部に連結されており、ぜんまいばねは、スプール１４を巻取方向に付勢している。 An urging mechanism 26 is provided on the right side of the frame 12, and a spring (not shown) as an urging member is provided in the urging mechanism 26. The mainspring is connected to the right end of the spool 14, and the mainspring urges the spool 14 in the winding direction.

スプール１４の内孔１４Ａには、連絡体（エネルギー吸収部材）としての金属製で略円柱状のトーションシャフト２８（図３（Ａ）参照）が同軸上に挿入されており、トーションシャフト２８は、鍛造により製造されて、硬度がスプール１４に比し高くされている。 A metal, substantially columnar torsion shaft 28 (see FIG. 3A) as a connecting body (energy absorbing member) is coaxially inserted into the inner hole 14A of the spool 14, and the torsion shaft 28 is inserted. Manufactured by forging, the hardness is higher than that of the spool 14.

トーションシャフト２８の右端部には、第１連絡部としての略円柱状の第１連絡柱３０（図３（Ｃ）参照）が同軸上に拡径されて形成されており、第１連絡柱３０は、スプール１４の第１連絡孔１６に左方から同軸上に挿入されている。第１連絡柱３０の周囲には、略台形柱状の挿入部３０Ａが複数（本実施形態では６個）形成されており、複数の挿入部３０Ａは、第１連絡柱３０の周方向に等間隔に配置されると共に、それぞれ第１連絡柱３０の周方向における寸法が第１連絡柱３０の径方向外側へ向かうに従い小さくされている。挿入部３０Ａの第１連絡柱３０の径方向外側かつ引出方向側の角面３０Ｂは、挿入部３０Ａの第１連絡柱３０の径方向外側かつ巻取方向側の角面に比し、内角が大きくされて、なだらかに凸状に湾曲されており、挿入部３０Ａの巻取方向側の側面は、略平面状にされて、第１連絡柱３０の径方向に対する傾斜角度が挿入部３０Ａの引出方向側の側面に比し小さくされている。 At the right end of the torsion shaft 28, a substantially cylindrical first connecting column 30 (see FIG. 3C) as a first connecting portion is formed by coaxially expanding the diameter of the first connecting column 30. Is coaxially inserted into the first connecting hole 16 of the spool 14 from the left side. A plurality of substantially trapezoidal columnar insertion portions 30A (six in the present embodiment) are formed around the first connecting pillar 30, and the plurality of insertion portions 30A are evenly spaced in the circumferential direction of the first connecting pillar 30. The dimensions of the first connecting pillar 30 in the circumferential direction are reduced toward the outer side in the radial direction of the first connecting pillar 30. The corner surface 30B on the radial outer side and the pull-out direction side of the first connecting pillar 30 of the insertion portion 30A has an inner angle as compared with the radial outer side and the winding direction side corner surface of the first connecting pillar 30 of the insertion portion 30A. It is enlarged and curved gently in a convex shape, the side surface of the insertion portion 30A on the winding direction side is made substantially flat, and the inclination angle of the first connecting pillar 30 with respect to the radial direction is the drawer of the insertion portion 30A. It is smaller than the side surface on the directional side.

挿入部３０Ａは、第１連絡孔１６の挿入孔１６Ａに挿入されており（図６（Ｂ）参照）、挿入部３０Ａの巻取方向側の側面は、挿入孔１６Ａの巻取方向側の側面に圧接（面圧接）されると共に、挿入部３０Ａの引出方向側の角面３０Ｂは、挿入孔１６Ａの引出方向側の角面１６Ｂに圧接されている。これにより、第１連絡柱３０（挿入部３０Ａを含む）が第１連絡孔１６（挿入孔１６Ａを含む）に周方向及び径方向において圧入されて、トーションシャフト２８がスプール１４に一体回転可能に連絡されている。 The insertion portion 30A is inserted into the insertion hole 16A of the first communication hole 16 (see FIG. 6B), and the side surface of the insertion portion 30A on the winding direction side is the side surface of the insertion hole 16A on the winding direction side. The square surface 30B on the pull-out direction side of the insertion portion 30A is pressure-welded to the square surface 16B on the pull-out direction side of the insertion hole 16A. As a result, the first connecting column 30 (including the insertion portion 30A) is press-fitted into the first connecting hole 16 (including the insertion hole 16A) in the circumferential direction and the radial direction, so that the torsion shaft 28 can rotate integrally with the spool 14. Have been contacted.

トーションシャフト２８の左端部には、第２連絡部としての略円柱状の第２連絡柱３２（図３（Ｂ）参照）が同軸上に拡径されて形成されている。第２連絡柱３２の周囲には、略台形柱状の圧入部３２Ａが複数（本実施形態では６個）形成されており、複数の圧入部３２Ａは、第２連絡柱３２の周方向に等間隔に配置されると共に、それぞれ第２連絡柱３２の周方向における寸法が第２連絡柱３２の径方向外側へ向かうに従い小さくされている。圧入部３２Ａの第２連絡柱３２径方向外側かつ引出方向側の角面３２Ｂは、圧入部３２Ａの第２連絡柱３２径方向外側かつ巻取方向側の角面に比し、内角が大きくされて、なだらかに凸状に湾曲されており、圧入部３２Ａの巻取方向側の側面は、略平面状にされて、第２連絡柱３２の径方向に対する傾斜角度が圧入部３２Ａの引出方向側の側面に比し小さくされている。 At the left end of the torsion shaft 28, a substantially cylindrical second connecting column 32 (see FIG. 3B) as a second connecting portion is formed by coaxially expanding the diameter. A plurality of substantially trapezoidal columnar press-fitting portions 32A (six in the present embodiment) are formed around the second connecting column 32, and the plurality of press-fitting portions 32A are evenly spaced in the circumferential direction of the second connecting column 32. The dimensions of the second connecting pillar 32 in the circumferential direction are reduced toward the outer side in the radial direction of the second connecting pillar 32. The corner surface 32B of the press-fitting portion 32A on the outer side in the radial direction of the second connecting column 32 and on the pull-out direction side has a larger internal angle than the corner surface of the press-fitting portion 32A on the outer side in the radial direction of the second connecting column 32 and on the winding direction side. The side surface of the press-fitting portion 32A on the winding direction side is formed to be substantially flat, and the inclination angle of the second connecting column 32 with respect to the radial direction is the drawing-out direction side of the press-fitting portion 32A. It is smaller than the side of.

スプール１４の左側には、規制機構としてのロック機構３４が設けられている。 A lock mechanism 34 as a regulation mechanism is provided on the left side of the spool 14.

ロック機構３４には、規制体を構成する連結部材としての金属製で略円環板状のピニオン３６が設けられており、ピニオン３６は、ダイカストにより製造されて、硬度がトーションシャフト２８に比し低くされている。ピニオン３６の中心側部分の右側には、外形断面円状の連絡筒３６Ａが同軸上に形成されており、連絡筒３６Ａがスプール１４の内孔１４Ａの左端部に同軸上に嵌入されて、ピニオン３６がスプール１４と同軸上に配置されている。 The lock mechanism 34 is provided with a metal pinion 36 having a substantially annular plate shape as a connecting member constituting the regulator. The pinion 36 is manufactured by die casting and has a hardness higher than that of the torsion shaft 28. It has been lowered. A connecting cylinder 36A having a circular outer cross section is coaxially formed on the right side of the central portion of the pinion 36, and the connecting cylinder 36A is coaxially fitted into the left end portion of the inner hole 14A of the spool 14 to form a pinion. 36 is arranged coaxially with the spool 14.

連絡筒３６Ａ内には、第２被連絡部としての略状の第２連絡孔３８（図４の（Ａ）及び（Ｂ）参照）が同軸上に形成されており、第２連絡孔３８は、右方に開放されている。第２連絡孔３８の周囲には、略台形状の圧入孔３８Ａが複数（本実施形態では６個）形成されており、複数の圧入孔３８Ａは、第２連絡孔３８の周方向に等間隔に配置されると共に、それぞれ第２連絡孔３８の周方向における寸法が第２連絡孔３８の径方向外側へ向かうに従い小さくされている。圧入孔３８Ａの第２連絡孔３８径方向外側かつ巻取方向側の角面３８Ｂは、圧入孔３８Ａの第２連絡孔３８径方向外側かつ引出方向側の角面に比し、内角が大きくされて、なだらかに凹状に湾曲されており、圧入孔３８Ａの引出方向側の側面は、略平面状にされて、第２連絡孔３８の径方向に対する傾斜角度が圧入孔３８Ａの巻取方向側の側面に比し小さくされている。 In the communication cylinder 36A, an abbreviated second communication hole 38 (see (A) and (B) in FIG. 4) as a second contact portion is formed coaxially, and the second communication hole 38 is formed. , Open to the right. A plurality of substantially trapezoidal press-fitting holes 38A (six in this embodiment) are formed around the second connecting hole 38, and the plurality of press-fitting holes 38A are evenly spaced in the circumferential direction of the second connecting hole 38. The dimensions of the second connecting hole 38 in the circumferential direction are reduced toward the outer side in the radial direction of the second connecting hole 38. The corner surface 38B of the press-fit hole 38A on the outer side in the radial direction of the second communication hole 38 and on the winding direction side has a larger internal angle than the corner surface of the press-fit hole 38A on the outer side in the radial direction of the second communication hole 38 and on the side in the withdrawal direction. The side surface of the press-fitting hole 38A on the drawing direction side is formed to be substantially flat, and the inclination angle of the second connecting hole 38 with respect to the radial direction is the winding direction side of the press-fitting hole 38A. It is smaller than the sides.

圧入孔３８Ａは、各側面が右方へ向かうに従い圧入孔３８Ａの外側へ向かう方向に傾斜されて、断面積が右方へ向かうに従い増加されており（図５（Ａ）参照）、これにより、圧入孔３８Ａの成形時に圧入孔３８Ａを成形する金型が圧入孔３８Ａから離脱可能にされている。圧入孔３８Ａの引出方向側の側面の右側部分には、補助部としての補助面３８Ｃが形成されており、圧入孔３８Ａの引出方向側の側面は、補助面３８Ｃにおいて、引出方向側への傾斜角度が大きくされている。これにより、圧入孔３８Ａの右端の第２連絡孔３８周方向における寸法が、トーションシャフト２８の圧入部３２Ａの第２連絡柱３２周方向における寸法に比し大きくされている。また、補助面３８Ｃの引出方向側への傾斜角度は、圧入孔３８Ａの巻取方向側の側面の巻取方向側への傾斜角度に比し大きくされている。 The press-fit hole 38A is inclined toward the outside of the press-fit hole 38A as each side surface is directed to the right, and the cross-sectional area is increased toward the right (see FIG. 5 (A)). When the press-fitting hole 38A is formed, the mold for forming the press-fitting hole 38A is made detachable from the press-fitting hole 38A. An auxiliary surface 38C as an auxiliary portion is formed on the right side portion of the side surface of the press-fitting hole 38A on the pull-out direction side, and the side surface of the press-fitting hole 38A on the pull-out direction side is inclined toward the pull-out direction side on the auxiliary surface 38C. The angle has been increased. As a result, the dimension of the right end of the press-fitting hole 38A in the circumferential direction of the second connecting hole 38 is larger than the dimension of the press-fitting portion 32A of the torsion shaft 28 in the circumferential direction of the second connecting column 32. Further, the inclination angle of the auxiliary surface 38C toward the pull-out direction is larger than the inclination angle of the side surface of the press-fitting hole 38A on the winding direction side toward the winding direction.

第２連絡孔３８には、右方からトーションシャフト２８の第２連絡柱３２が軸方向全体（外周面の軸方向全体）において同軸上に挿入されており、第２連絡柱３２の圧入部３２Ａは、第２連絡孔３８の圧入孔３８Ａに挿入されている（図４の（Ｂ）及び（Ｃ）参照）。圧入部３２Ａの引出方向側の側面は、圧入孔３８Ａの引出方向側の側面に圧接されると共に、圧入部３２Ａの巻取方向側の角面は、圧入孔３８Ａの巻取方向側の角面３８Ｂに圧接されており、これにより、第２連絡柱３２（圧入部３２Ａを含む）が第２連絡孔３８（圧入孔３８Ａを含む）に周方向及び径方向において圧入されて、トーションシャフト２８がピニオン３６に一体回転可能に連絡されている。 The second connecting column 32 of the torsion shaft 28 is coaxially inserted into the second connecting hole 38 in the entire axial direction (the entire axial direction of the outer peripheral surface) from the right side, and the press-fitting portion 32A of the second connecting column 32 is inserted. Is inserted into the press-fitting hole 38A of the second connecting hole 38 (see (B) and (C) of FIG. 4). The side surface of the press-fitting portion 32A on the pull-out direction side is press-contacted with the side surface of the press-fitting hole 38A on the pull-out direction side, and the corner surface of the press-fitting portion 32A on the winding direction side is the corner surface of the press-fitting hole 38A on the winding direction side. It is press-fitted to 38B, whereby the second connecting column 32 (including the press-fitting portion 32A) is press-fitted into the second connecting hole 38 (including the press-fitting hole 38A) in the circumferential direction and the radial direction, and the torsion shaft 28 is pressed. It is in contact with the pinion 36 so that it can rotate integrally.

第２連絡柱３２（圧入部３２Ａを含む）が第２連絡孔３８（圧入孔３８Ａを含む）に圧入される際には、圧入部３２Ａの左面（端面）が圧入孔３８Ａの引出方向側及び巻取方向側の側面に補助面３８Ｃの左右方向中間の位置において当接される（図５（Ａ）参照）。その後、圧入部３２Ａの左面が圧入孔３８Ａの引出方向側及び巻取方向側の側面を削って圧入孔３８Ａを引出方向側及び巻取方向側に拡大させる（図５の（Ｂ）〜（Ｄ）の領域Ｃの部分参照）。しかも、圧入孔３８Ａの巻取方向側の角面３８Ｂ（傾斜面）によって圧入部３２Ａが圧入孔３８Ａの引出方向側の側面（下記削れ面３８Ｄ）に押付けられて、圧入部３２Ａの引出方向側の側面が圧入孔３８Ａの引出方向側の側面を引出方向側に変形させる（圧入孔３８Ａの引出方向側の側面形成部分を引出方向側に圧縮させる、図５の（Ｃ）及び（Ｄ）の領域Ｄの部分参照）。このため、圧入孔３８Ａの引出方向側の側面における右端部以外の部分（補助面３８Ｃの左側部分を含む）及び圧入孔３８Ａの引出方向側の側面の左端部が、削れ部としての削れ面３８Ｄにされている。 When the second connecting column 32 (including the press-fitting portion 32A) is press-fitted into the second connecting hole 38 (including the press-fitting hole 38A), the left surface (end surface) of the press-fitting portion 32A is the drawing direction side of the press-fitting hole 38A and The auxiliary surface 38C is brought into contact with the side surface on the winding direction side at a position intermediate in the left-right direction (see FIG. 5 (A)). After that, the left surface of the press-fitting portion 32A scrapes the side surfaces of the press-fitting hole 38A on the pull-out direction side and the winding direction side to expand the press-fitting hole 38A toward the drawing direction side and the winding direction side ((B) to (D) in FIGS. 5). ) Part C). Moreover, the press-fit portion 32A is pressed against the side surface of the press-fit hole 38A on the pull-out direction side (hereinafter referred to as the scraped surface 38D) by the square surface 38B (inclined surface) on the take-up direction side of the press-fit hole 38A, and the press-fit portion 32A is on the pull-out direction side. (C) and (D) of FIGS. See part of region D). Therefore, the portion other than the right end portion on the side surface of the press-fitting hole 38A on the pull-out direction side (including the left side portion of the auxiliary surface 38C) and the left end portion of the side surface of the press-fitting hole 38A on the pull-out direction side are the scraped surface 38D as a scraped portion. Has been made.

ピニオン３６の左側には、規制体を構成する規制部材としての金属製で略円板状のロックベース４０が同軸上に配置されており、ロックベース４０は、ピニオン３６と一体回転可能に連結されている。 On the left side of the pinion 36, a metal, substantially disk-shaped lock base 40 as a regulating member constituting the regulating body is coaxially arranged, and the lock base 40 is rotatably connected to the pinion 36. ing.

ロック機構３４には、ロックベース４０の左側において、センサ機構４２が設けられている。車両の衝突時（車両の急減速時及びウェビング２２のスプール１４からの急引出し時等の車両の緊急時である所定の機会）には、センサ機構４２が作動されて、ロック機構３４がロックベース４０の引出方向への回転を規制（ロック）することで、ピニオン３６の引出方向への回転が規制されて、トーションシャフト２８を介してスプール１４の引出方向への回転が制限される。 The lock mechanism 34 is provided with a sensor mechanism 42 on the left side of the lock base 40. In the event of a vehicle collision (a predetermined opportunity that is an emergency of the vehicle such as when the vehicle is suddenly decelerated or when the webbing 22 is suddenly pulled out from the spool 14), the sensor mechanism 42 is activated and the lock mechanism 34 is locked based. By restricting (locking) the rotation of the 40 in the pull-out direction, the rotation of the pinion 36 in the pull-out direction is restricted, and the rotation of the spool 14 in the pull-out direction is restricted via the torsion shaft 28.

次に、本実施形態の作用を説明する。 Next, the operation of this embodiment will be described.

以上の構成のウェビング巻取装置１０では、スプール１４からウェビング２２が引出されて、乗員にウェビング２２が装着される。また、付勢機構２６のぜんまいばねの付勢力により、スプール１４が巻取方向に回転されて、ウェビング２２がスプール１４に巻取られることで、乗員に装着されたウェビング２２の弛みが除去される。 In the webbing take-up device 10 having the above configuration, the webbing 22 is pulled out from the spool 14, and the webbing 22 is mounted on the occupant. Further, the spool 14 is rotated in the winding direction by the urging force of the spring of the urging mechanism 26, and the webbing 22 is wound on the spool 14, so that the slack of the webbing 22 mounted on the occupant is removed. ..

車両の衝突時には、ロック機構３４のセンサ機構４２が作動されて、ロック機構３４がロックベース４０の引出方向への回転を規制することで、ピニオン３６の引出方向への回転が規制されて、トーションシャフト２８を介してスプール１４の引出方向への回転が制限される。これにより、ウェビング２２のスプール１４からの引出しが制限されることで、ウェビング２２によって乗員が拘束される。 In the event of a vehicle collision, the sensor mechanism 42 of the lock mechanism 34 is activated, and the lock mechanism 34 regulates the rotation of the lock base 40 in the pull-out direction, so that the rotation of the pinion 36 in the pull-out direction is restricted, and the torsion The rotation of the spool 14 in the pull-out direction is restricted via the shaft 28. As a result, the withdrawal of the webbing 22 from the spool 14 is restricted, so that the occupant is restrained by the webbing 22.

ロックベース４０及びピニオン３６の引出方向への回転が規制された状態で、乗員によるウェビング２２のスプール１４からの引出荷重（スプール１４の引出方向への回転荷重）がトーションシャフト２８の耐捩れ荷重（フォースリミッタ荷重）以上である際には、トーションシャフト２８が捩れ変形されて、スプール１４のロックベース４０及びピニオン３６に対する引出方向への回転が許容される。これにより、乗員の運動エネルギーがトーションシャフト２８の捩れ変形によって吸収されて、乗員が保護される。 With the rotation of the lock base 40 and the pinion 36 in the pull-out direction restricted, the pull-out load of the webbing 22 from the spool 14 by the occupant (rotational load in the pull-out direction of the spool 14) is the torsional load resistance of the torsion shaft 28 (the torsional load of the torsion shaft 28). When the load is equal to or greater than the force limiter load), the torsion shaft 28 is twisted and deformed, and the spool 14 is allowed to rotate in the pull-out direction with respect to the lock base 40 and the pinion 36. As a result, the kinetic energy of the occupant is absorbed by the torsional deformation of the torsion shaft 28, and the occupant is protected.

ところで、ウェビング２２の基端側がスプール１４の貫通孔１８に挿入されると共に、ウェビング２２の係止筒２２Ａ及びシャフト２４が貫通孔１８の係止孔１８Ａの先端側の両側面に係止されており、スプール１４にウェビング２２が基端側から巻取られている。また、トーションシャフト２８の第１連絡柱３０（挿入部３０Ａを含む）がスプール１４の第１連絡孔１６（挿入孔１６Ａを含む）に圧入されて、トーションシャフト２８がスプール１４に一体回転可能に連絡されている。さらに、トーションシャフト２８の第２連絡柱３２（圧入部３２Ａを含む）がピニオン３６の第２連絡孔３８（圧入孔３８Ａを含む）に圧入されて、トーションシャフト２８がピニオン３６に一体回転可能に連絡されている。 By the way, the base end side of the webbing 22 is inserted into the through hole 18 of the spool 14, and the locking cylinder 22A and the shaft 24 of the webbing 22 are locked to both side surfaces on the tip end side of the locking hole 18A of the through hole 18. The webbing 22 is wound around the spool 14 from the base end side. Further, the first connecting column 30 (including the insertion portion 30A) of the torsion shaft 28 is press-fitted into the first connecting hole 16 (including the insertion hole 16A) of the spool 14, so that the torsion shaft 28 can rotate integrally with the spool 14. Have been contacted. Further, the second connecting column 32 (including the press-fitting portion 32A) of the torsion shaft 28 is press-fitted into the second connecting hole 38 (including the press-fitting hole 38A) of the pinion 36, so that the torsion shaft 28 can rotate integrally with the pinion 36. Have been contacted.

ここで、ピニオン３６の圧入孔３８Ａの引出方向側及び巻取方向側の側面が右方へ向かうに従い圧入孔３８Ａの外側へ向かう方向に傾斜されており、圧入孔３８Ａに右方からトーションシャフト２８の圧入部３２Ａが圧入されることで、左方（圧入孔３８Ａへの圧入部３２Ａの圧入方向）へ向かうに従い圧入部３２Ａと圧入孔３８Ａの引出方向側及び巻取方向側の側面との干渉力が大きくされている。このため、圧入孔３８Ａに対する圧入部３２Ａの引出方向及び巻取方向への回転を効果的に制限でき、圧入孔３８Ａに圧入部３２Ａを効果的に保持できる。これにより、特にピニオン３６の引出方向への回転が規制された際に、第２連絡孔３８に対する第２連絡柱３２の回転を効果的に制限でき、ピニオン３６にトーションシャフト２８を効果的に保持できて、ピニオン３６にトーションシャフト２８を別部品により保持する必要をなくすことができる。 Here, the side surfaces of the press-fitting hole 38A of the pinion 36 on the pull-out direction side and the winding direction side are inclined toward the outside of the press-fitting hole 38A toward the right, and the torsion shaft 28 is inclined to the press-fitting hole 38A from the right side. By press-fitting the press-fitting portion 32A, the press-fitting portion 32A interferes with the side surface of the press-fitting hole 38A on the pull-out direction side and the winding direction side toward the left side (the press-fitting direction of the press-fitting portion 32A into the press-fitting hole 38A). The power has been increased. Therefore, the rotation of the press-fitting portion 32A with respect to the press-fitting hole 38A in the pull-out direction and the winding direction can be effectively restricted, and the press-fitting portion 32A can be effectively held in the press-fitting hole 38A. As a result, the rotation of the second connecting column 32 with respect to the second connecting hole 38 can be effectively restricted, and the torsion shaft 28 is effectively held by the pinion 36, particularly when the rotation of the pinion 36 in the pull-out direction is restricted. This makes it possible to eliminate the need to hold the torsion shaft 28 on the pinion 36 by a separate component.

さらに、圧入孔３８Ａへの圧入部３２Ａの圧入により圧入孔３８Ａの引出方向側の側面に削れ面３８Ｄが形成されており、ピニオン３６の引出方向への回転が規制された際には、スプール１４を介するトーションシャフト２８の引出方向への回転力が圧入部３２Ａから当該削れ面３８Ｄに作用される。このため、圧入孔３８Ａの引出方向側の側面が当該削れ面３８Ｄの形成により圧入部３２Ａの引出方向側の側面と同一形状に形成されて、当該削れ面３８Ｄにより圧入部３２Ａを圧入孔３８Ａの引出方向側の側面に効果的に密着させることができ、圧入部３２Ａの引出方向への回転力により圧入孔３８Ａの引出方向側の側面が変形されることを抑制できて、圧入部３２Ａの引出方向への回転力を圧入孔３８Ａの引出方向側の側面が効果的に受けることができる。これにより、圧入孔３８Ａに圧入部３２Ａを一層効果的に保持できて、ピニオン３６にトーションシャフト２８を一層効果的に保持できる。 Further, when the press-fitting portion 32A is press-fitted into the press-fitting hole 38A, a scraped surface 38D is formed on the side surface of the press-fitting hole 38A on the pull-out direction side, and when the rotation of the pinion 36 in the pull-out direction is restricted, the spool 14 A rotational force of the torsion shaft 28 in the pulling direction is applied from the press-fitting portion 32A to the scraped surface 38D. Therefore, the side surface of the press-fitting hole 38A on the pull-out direction side is formed to have the same shape as the side surface of the press-fitting portion 32A on the pull-out direction side by forming the machined surface 38D, and the press-fitting portion 32A is formed by the machined surface 38D of the press-fitting hole 38A. It can be effectively brought into close contact with the side surface on the pull-out direction side, and it is possible to prevent the side surface of the press-fitting hole 38A on the pull-out direction side from being deformed by the rotational force of the press-fitting portion 32A in the pull-out direction. The side surface of the press-fitting hole 38A on the pull-out direction side can effectively receive the rotational force in the direction. As a result, the press-fitting portion 32A can be more effectively held in the press-fitting hole 38A, and the torsion shaft 28 can be held more effectively in the pinion 36.

しかも、圧入部３２Ａが回転軸方向全体において圧入孔３８Ａの引出方向側の側面に圧接されて、圧入部３２Ａが回転軸方向全体において圧入孔３８Ａに圧入されている。このため、圧入孔３８Ａに対する圧入部３２Ａの引出方向への回転及び回転径方向への傾きを効果的に制限でき、圧入孔３８Ａに圧入部３２Ａを一層効果的に保持できる。これにより、特にピニオン３６の引出方向への回転が規制された際に、第２連絡孔３８に対する第２連絡柱３２の引出方向への回転及び径方向への傾きを効果的に制限でき、ピニオン３６にトーションシャフト２８を一層効果的に保持できる。 Moreover, the press-fitting portion 32A is press-fitted to the side surface of the press-fitting hole 38A on the pull-out direction side in the entire rotation axis direction, and the press-fitting portion 32A is press-fitted into the press-fitting hole 38A in the entire rotation axis direction. Therefore, the rotation of the press-fitting portion 32A with respect to the press-fitting hole 38A in the pull-out direction and the inclination in the rotational radial direction can be effectively restricted, and the press-fitting portion 32A can be more effectively held in the press-fitting hole 38A. This makes it possible to effectively limit the rotation of the second connecting pillar 32 with respect to the second connecting hole 38 in the pulling direction and the inclination in the radial direction with respect to the second connecting hole 38, particularly when the rotation of the pinion 36 in the pulling direction is restricted. The torsion shaft 28 can be held at 36 more effectively.

また、圧入孔３８Ａの引出方向側の側面の右側部分に補助面３８Ｃが形成されており、補助面３８Ｃが、圧入孔３８Ａの第２連絡孔３８周方向における寸法を圧入孔３８Ａの右側部分において大きく拡大させて、圧入孔３８Ａへの圧入部３２Ａの圧入を補助する。このため、圧入孔３８Ａへの圧入部３２Ａの圧入を容易化できる。 Further, an auxiliary surface 38C is formed on the right side portion of the side surface of the press-fitting hole 38A on the pull-out direction side, and the auxiliary surface 38C measures the dimension of the press-fitting hole 38A in the circumferential direction of the second connecting hole 38 on the right side portion of the press-fitting hole 38A. It is greatly expanded to assist the press-fitting portion 32A into the press-fitting hole 38A. Therefore, the press-fitting portion 32A into the press-fitting hole 38A can be easily press-fitted.

しかも、圧入孔３８Ａの引出方向側の側面に補助面３８Ｃが形成されている。このため、圧入孔３８Ａに圧入部３２Ａが圧入される際には、圧入部３２Ａの左面に対する補助面３８Ｃの傾斜角度を小さくできて、圧入部３２Ａの左面により圧入孔３８Ａの主に引出方向側の側面に削れ面３８Ｄを形成できる。これにより、圧入孔３８Ａの引出方向側の側面に削れ面３８Ｄを効果的に形成できる。 Moreover, an auxiliary surface 38C is formed on the side surface of the press-fitting hole 38A on the drawing direction side. Therefore, when the press-fitting portion 32A is press-fitted into the press-fitting hole 38A, the inclination angle of the auxiliary surface 38C with respect to the left surface of the press-fitting portion 32A can be reduced, and the left surface of the press-fitting portion 32A mainly serves the press-fitting hole 38A in the pull-out direction side. A scraped surface 38D can be formed on the side surface of the surface. As a result, the scraped surface 38D can be effectively formed on the side surface of the press-fitting hole 38A on the drawing direction side.

また、スプール１４において、受部２０の基端側部分の係止孔１８Ａ側の面が係止孔１８Ａの先端側の側面によって形成されると共に、受部２０の基端側部分の内孔１４Ａ側の面が第１連絡孔１６における挿入孔１６Ａの引出方向側部分の周面と面一にされており、挿入孔１６Ａの引出方向側の角面１６Ｂが挿入孔１６Ａの巻取方向側の角面に比しなだらかに凹状に湾曲されている。このため、受部２０の基端側部分の係止孔１８Ａ側の面（係止孔１８Ａの先端側の側面）が凹状に湾曲されても、受部２０の基端側部分の内孔１４Ａ側の面がなだらかな凹状の湾曲面されることで、受部２０の基端側部分の肉厚寸法（図６（Ｂ）の寸法Ｌ）が減少することを抑制できて、受部２０の基端側部分の強度が低下することを抑制できる。これにより、ウェビング２２にスプール１４からの引出力が作用されて、ウェビング２２の係止筒２２Ａ及びシャフト２４から受部２０の先端側部分（係止孔１８Ａの先端側の側面）に荷重が作用された場合でも、受部２０の基端側部分が損傷することを抑制できる。 Further, in the spool 14, the surface of the receiving portion 20 on the proximal end side portion on the locking hole 18A side is formed by the side surface on the distal end side of the locking hole 18A, and the inner hole 14A of the proximal end side portion of the receiving portion 20 is formed. The side surface is flush with the peripheral surface of the extraction direction side portion of the insertion hole 16A in the first communication hole 16, and the corner surface 16B on the extraction direction side of the insertion hole 16A is on the winding direction side of the insertion hole 16A. It is curved gently and concavely compared to the corner surface. Therefore, even if the surface of the receiving portion 20 on the base end side portion on the locking hole 18A side (the side surface on the tip end side of the locking hole 18A) is curved in a concave shape, the inner hole 14A of the proximal end side portion of the receiving portion 20 is formed. Since the side surface is a gently concave curved surface, it is possible to suppress a decrease in the wall thickness dimension (dimension L in FIG. 6B) of the base end side portion of the receiving portion 20, and the receiving portion 20 can be prevented from being reduced. It is possible to suppress a decrease in the strength of the base end side portion. As a result, the pulling output from the spool 14 is applied to the webbing 22, and a load is applied from the locking cylinder 22A and the shaft 24 of the webbing 22 to the tip end side portion (the tip end side side surface of the locking hole 18A) of the receiving portion 20. Even if this is done, it is possible to prevent the base end side portion of the receiving portion 20 from being damaged.

さらに、挿入孔１６Ａの巻取方向側の側面が、略平面状にされて、第１連絡孔１６の径方向に対する傾斜角度を挿入孔１６Ａの引出方向側の側面に比し小さくされている。このため、ピニオン３６の引出方向への回転が規制された際には、スプール１４の引出方向への回転力を挿入孔１６Ａの巻取方向側の側面からトーションシャフト２８の第１連絡柱３０の挿入部３０Ａに効果的に作用させることができると共に、挿入孔１６Ａの巻取方向側の側面の当該回転力の挿入部３０Ａへの伝達強度を高くできる。 Further, the side surface of the insertion hole 16A on the winding direction side is made substantially flat so that the inclination angle of the first communication hole 16 with respect to the radial direction is smaller than that of the side surface of the insertion hole 16A on the pull-out direction side. Therefore, when the rotation of the pinion 36 in the pull-out direction is restricted, the rotational force of the spool 14 in the pull-out direction is applied to the first connecting column 30 of the torsion shaft 28 from the side surface of the insertion hole 16A on the take-up direction side. It is possible to effectively act on the insertion portion 30A, and it is possible to increase the transmission strength of the rotational force of the side surface of the insertion hole 16A on the winding direction side to the insertion portion 30A.

なお、本実施形態では、ピニオン３６の圧入孔３８Ａの周面に削れ面３８Ｄが形成される。しかしながら、ピニオン３６の圧入孔３８Ａ及びトーションシャフト２８の圧入部３２Ａの少なくとも一方の周面に削れ面３８Ｄが形成されればよい。 In this embodiment, a scraped surface 38D is formed on the peripheral surface of the press-fitting hole 38A of the pinion 36. However, a scraped surface 38D may be formed on at least one peripheral surface of the press-fitting hole 38A of the pinion 36 and the press-fitting portion 32A of the torsion shaft 28.

さらに、本実施形態では、トーションシャフト２８の第２連絡柱３２（圧入部３２Ａを含む）が軸方向全体においてピニオン３６の第２連絡孔３８（圧入孔３８Ａを含む）に圧入される。しかしながら、トーションシャフト２８の第２連絡柱３２（圧入部３２Ａを含む）がピニオン３６の第２連絡孔３８（圧入孔３８Ａを含む）の軸方向全体に圧入されてもよい。 Further, in the present embodiment, the second connecting column 32 (including the press-fitting portion 32A) of the torsion shaft 28 is press-fitted into the second connecting hole 38 (including the press-fitting hole 38A) of the pinion 36 in the entire axial direction. However, the second connecting column 32 (including the press-fitting portion 32A) of the torsion shaft 28 may be press-fitted into the entire axial direction of the second connecting hole 38 (including the press-fitting hole 38A) of the pinion 36.

また、本実施形態において、スプール１４の第１連絡孔１６（挿入孔１６Ａを含む）をピニオン３６の第２連絡孔３８（圧入孔３８Ａを含む）の構成に変更すると共に、トーションシャフト２８の第１連絡柱３０（挿入部３０Ａを含む）をトーションシャフト２８の第２連絡柱３２（圧入部３２Ａを含む）の構成に変更してもよい。この場合、スプール１４の圧入孔３８Ａの巻取方向側と引出方向側とを反転させると共に、トーションシャフト２８のスプール１４側の圧入部３２Ａの巻取方向側と引出方向側とを反転させてもよい。 Further, in the present embodiment, the first connecting hole 16 (including the insertion hole 16A) of the spool 14 is changed to the configuration of the second connecting hole 38 (including the press-fitting hole 38A) of the pinion 36, and the torsion shaft 28 is the second. 1 The connecting column 30 (including the insertion portion 30A) may be changed to the configuration of the second connecting column 32 (including the press-fitting portion 32A) of the torsion shaft 28. In this case, even if the take-up direction side and the withdrawal direction side of the press-fitting hole 38A of the spool 14 are reversed and the take-up direction side and the withdrawal direction side of the press-fitting portion 32A on the spool 14 side of the torsion shaft 28 are reversed. good.

さらに、本実施形態では、スプール１４に第１連絡孔１６（挿入孔１６Ａを含む）を設けると共に、トーションシャフト２８に第１連絡柱３０（挿入部３０Ａを含む）を設けた。しかしながら、スプール１４に第１連絡柱３０（挿入部３０Ａを含む）を設けると共に、トーションシャフト２８に第１連絡孔１６（挿入孔１６Ａを含む）を設けてもよい。 Further, in the present embodiment, the spool 14 is provided with the first connecting hole 16 (including the insertion hole 16A), and the torsion shaft 28 is provided with the first connecting column 30 (including the insertion portion 30A). However, the spool 14 may be provided with the first connecting column 30 (including the insertion portion 30A), and the torsion shaft 28 may be provided with the first connecting hole 16 (including the insertion hole 16A).

また、本実施形態では、トーションシャフト２８に第２連絡柱３２（圧入部３２Ａを含む）を設けると共に、ピニオン３６に第２連絡孔３８（圧入孔３８Ａを含む）を設けた。しかしながら、トーションシャフト２８に第２連絡孔３８（圧入孔３８Ａを含む）を設けると共に、ピニオン３６に第２連絡柱３２（圧入部３２Ａを含む）を設けてもよい。 Further, in the present embodiment, the torsion shaft 28 is provided with the second connecting column 32 (including the press-fitting portion 32A), and the pinion 36 is provided with the second connecting hole 38 (including the press-fitting hole 38A). However, the torsion shaft 28 may be provided with the second connecting hole 38 (including the press-fitting hole 38A), and the pinion 36 may be provided with the second connecting column 32 (including the press-fitting portion 32A).

さらに、本実施形態では、スプール１４とトーションシャフト２８とを別体にすると共に、トーションシャフト２８とピニオン３６とを別体にした。しかしながら、スプール１４とトーションシャフト２８とを一体にして連絡してもよく、又は、トーションシャフト２８とピニオン３６とを一体にして連絡してもよい。 Further, in the present embodiment, the spool 14 and the torsion shaft 28 are separated, and the torsion shaft 28 and the pinion 36 are separated. However, the spool 14 and the torsion shaft 28 may be integrally communicated with each other, or the torsion shaft 28 and the pinion 36 may be integrally communicated with each other.

また、本実施形態では、ピニオン３６とロックベース４０とを別体にした。しかしながら、ピニオン３６とロックベース４０とを一体にしてもよい。 Further, in the present embodiment, the pinion 36 and the lock base 40 are separated. However, the pinion 36 and the lock base 40 may be integrated.

１０ ウェビング巻取装置
１４ スプール（回転体）
２２ ウェビング
２８ トーションシャフト（連絡体）
３２Ａ 圧入部
３６ ピニオン（規制体）
３８Ａ 圧入孔
３８Ｃ 補助面（補助部）
３８Ｄ 削れ面（削れ部）
４０ ロックベース（規制体） 10 Webbing winder 14 Spool (rotating body)
22 Webbing 28 Torsion shaft (connector)
32A press-fitting part 36 pinion (regulator)
38A Press-fit hole 38C Auxiliary surface (auxiliary part)
38D Shaving surface (shaving part)
40 lock base (regulator)

Claims (4)

乗員に装着されるウェビングが引出されて引出方向に回転される回転体と、
前記回転体と一体回転可能に連絡される連絡体と、
前記連絡体と一体回転可能に連絡され、所定の機会に引出方向への回転が規制される規制体と、
前記回転体又は前記規制体と前記連絡体との一方に設けられ、前記回転体又は前記規制体と前記連絡体との他方に設けられる圧入孔に圧入されて前記回転体又は前記規制体と前記連絡体とが連絡されると共に、前記圧入孔への圧入方向へ向かうに従い前記圧入孔との干渉力が大きくされる圧入部と、
前記規制体の引出方向への回転が規制される際における前記回転体の回転力の作用側において前記圧入孔の周面に設けられると共に、前記圧入孔の当該作用側とは反対側の周面に比し前記圧入孔への前記圧入部の圧入方向に対する傾斜角度を大きくされ、前記圧入孔への前記圧入部の圧入を補助する補助部と、
を備えるウェビング巻取装置。 A rotating body in which the webbing attached to the occupant is pulled out and rotated in the pulling direction,
A contact body that is rotatably connected to the rotating body,
A regulatory body that is rotatably communicated with the communication body and whose rotation in the pull-out direction is restricted at a predetermined opportunity.
It is provided in one of the rotating body or the restricting body and the connecting body, and is press-fitted into a press-fitting hole provided in the other of the rotating body or the restricting body and the connecting body to be press-fitted into the rotating body or the restricting body and the said. A press-fitting portion in which the contact body is communicated and the interference force with the press-fitting hole is increased toward the press-fitting direction of the press-fitting hole.
It is provided on the peripheral surface of the press-fitting hole on the acting side of the rotational force of the rotating body when the rotation of the restricting body in the withdrawal direction is restricted, and the peripheral surface of the press-fitting hole on the opposite side to the acting side. An auxiliary portion that assists in press-fitting the press-fitting portion into the press-fitting hole by increasing the inclination angle of the press-fitting portion with respect to the press-fitting direction into the press-fitting hole.
Webbing winder equipped with. 乗員に装着されるウェビングが引出されて引出方向に回転される回転体と、
前記回転体と一体回転可能に連絡される連絡体と、
前記連絡体と一体回転可能に連絡され、所定の機会に引出方向への回転が規制される規制体と、
前記回転体又は前記規制体と前記連絡体との一方に設けられ、前記回転体又は前記規制体と前記連絡体との他方に設けられる圧入孔に圧入されて前記回転体又は前記規制体と前記連絡体とが連絡される圧入部と、
前記圧入孔及び前記圧入部の少なくとも一方の周面に設けられると共に、前記規制体の引出方向への回転が規制される際における前記回転体の回転力の作用側に配置され、前記圧入孔への前記圧入部の圧入による削れ部と、
を備えるウェビング巻取装置。 A rotating body in which the webbing attached to the occupant is pulled out and rotated in the pulling direction,
A contact body that is rotatably connected to the rotating body,
A regulatory body that is rotatably communicated with the communication body and whose rotation in the pull-out direction is restricted at a predetermined opportunity.
It is provided in one of the rotating body or the restricting body and the connecting body, and is press-fitted into a press-fitting hole provided in the other of the rotating body or the restricting body and the connecting body to be press-fitted into the rotating body or the restricting body and the said. The press-fitting part where the contact body is contacted, and
It is provided on at least one peripheral surface of the press-fitting hole and the press-fitting portion, and is arranged on the acting side of the rotational force of the rotating body when the rotation of the restricting body in the withdrawal direction is restricted to the press-fitting hole. The scraped part due to the press-fitting of the press-fitting part and
Webbing winder equipped with. 乗員に装着されるウェビングが引出されて引出方向に回転される回転体と、
前記回転体と一体回転可能に連絡される連絡体と、
前記連絡体と一体回転可能に連絡され、所定の機会に引出方向への回転が規制される規制体と、
前記回転体又は前記規制体と前記連絡体との一方に設けられ、前記回転体又は前記規制体と前記連絡体との他方に設けられる圧入孔の回転軸方向全体に圧入され又は回転軸方向全体において前記圧入孔に圧入されて前記回転体又は前記規制体と前記連絡体とが連絡される圧入部と、
前記規制体の引出方向への回転が規制される際における前記回転体の回転力の作用側において前記圧入孔の周面に設けられると共に、前記圧入孔の当該作用側とは反対側の周面に比し前記圧入孔への前記圧入部の圧入方向に対する傾斜角度を大きくされ、前記圧入孔への前記圧入部の圧入を補助する補助部と、
を備えるウェビング巻取装置。 A rotating body in which the webbing attached to the occupant is pulled out and rotated in the pulling direction,
A contact body that is rotatably connected to the rotating body,
A regulatory body that is rotatably communicated with the communication body and whose rotation in the pull-out direction is restricted at a predetermined opportunity.
A press-fitting hole provided on one of the rotating body or the restricting body and the connecting body and provided on the other side of the rotating body or the restricting body and the connecting body is press-fitted into the entire rotation axis direction or the entire rotation axis direction. In the press-fitting portion, which is press-fitted into the press-fitting hole to communicate the rotating body or the restricting body with the connecting body,
It is provided on the peripheral surface of the press-fitting hole on the acting side of the rotational force of the rotating body when the rotation of the restricting body in the withdrawal direction is restricted, and the peripheral surface of the press-fitting hole on the opposite side to the acting side. An auxiliary portion that assists in press-fitting the press-fitting portion into the press-fitting hole by increasing the inclination angle of the press-fitting portion with respect to the press-fitting direction into the press-fitting hole.
Webbing winder equipped with. 前記圧入孔への前記圧入部の圧入を補助する補助部を備える請求項２記載のウェビング巻取装置。 The webbing winding device according to claim 2 , further comprising an auxiliary portion for assisting the press-fitting of the press-fitting portion into the press-fitting hole.
JP2018025790A 2018-02-16 2018-02-16 Webbing winder Active JP6933988B2 (en)

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US16/968,262 US11518340B2 (en) 2018-02-16 2019-01-29 Webbing take-up device
PCT/JP2019/003007 WO2019159686A1 (en) 2018-02-16 2019-01-29 Webbing winding device

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JP2002104134A (en) 2000-09-29 2002-04-10 Takata Corp Seat belt retractor
US7410113B2 (en) * 2004-12-09 2008-08-12 Autoliv Asp, Inc. Modular torsion bar
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